1// RUN: %clang_cc1 -fopenmp=libiomp5 -emit-llvm %s -o - | FileCheck %s
2
3void h1(float *c, float *a, float *b, int size)
4{
5// CHECK-LABEL: define void @h1
6  int t = 0;
7#pragma omp simd safelen(16) linear(t)
8  for (int i = 0; i < size; ++i) {
9    c[i] = a[i] * a[i] + b[i] * b[t];
10    ++t;
11// do not emit parallel_loop_access metadata due to usage of safelen clause.
12// CHECK-NOT: store float {{.+}}, float* {{.+}}, align {{.+}}, !llvm.mem.parallel_loop_access {{![0-9]+}}
13  }
14}
15
16void h2(float *c, float *a, float *b, int size)
17{
18// CHECK-LABEL: define void @h2
19  int t = 0;
20#pragma omp simd linear(t)
21  for (int i = 0; i < size; ++i) {
22    c[i] = a[i] * a[i] + b[i] * b[t];
23    ++t;
24// CHECK: store float {{.+}}, float* {{.+}}, align {{.+}}, !llvm.mem.parallel_loop_access [[LOOP_H2_HEADER:![0-9]+]]
25  }
26}
27
28void h3(float *c, float *a, float *b, int size)
29{
30// CHECK-LABEL: define void @h3
31#pragma omp simd
32  for (int i = 0; i < size; ++i) {
33    for (int j = 0; j < size; ++j) {
34      c[j*i] = a[i] * b[j];
35    }
36  }
37// do not emit parallel_loop_access for nested loop.
38// CHECK-NOT: store float {{.+}}, float* {{.+}}, align {{.+}}, !llvm.mem.parallel_loop_access {{![0-9]+}}
39}
40
41// Metadata for h1:
42// CHECK: [[LOOP_H1_HEADER:![0-9]+]] = metadata !{metadata [[LOOP_H1_HEADER]], metadata [[LOOP_WIDTH_16:![0-9]+]], metadata [[LOOP_VEC_ENABLE:![0-9]+]]}
43// CHECK: [[LOOP_WIDTH_16]] = metadata !{metadata !"llvm.loop.vectorize.width", i32 16}
44// CHECK: [[LOOP_VEC_ENABLE]] = metadata !{metadata !"llvm.loop.vectorize.enable", i1 true}
45//
46// Metadata for h2:
47// CHECK: [[LOOP_H2_HEADER]] = metadata !{metadata [[LOOP_H2_HEADER]], metadata [[LOOP_VEC_ENABLE]]}
48//
49// Metadata for h3:
50// CHECK: [[LOOP_H3_HEADER:![0-9]+]] = metadata !{metadata [[LOOP_H3_HEADER]], metadata [[LOOP_VEC_ENABLE]]}
51//
52